CN102978512B - High-strength painted bundling belt and manufacturing method thereof - Google Patents
High-strength painted bundling belt and manufacturing method thereof Download PDFInfo
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Abstract
The invention discloses a high-strength painted bundling belt. The high-strength painted bundling belt comprises the following chemical components by weight percent: 0.12-0.20% of C, 0.2-0.6% of Si, 1.2-2.0% of Mn, less than or equal to 0.025% of P, less than or equal to 0.02% of S and 0.01-0.05% of Nb. The high-strength painted bundling belt is prepared by the steps of smelting, casting a blank, and then carrying out hot-rolling to form coils; carrying out acid cleaning; carrying out cold rolling; uncoiling, splitting and conducting deburring; carrying out tempering treatment in a lead-bismuth furnace; carrying out water cooling; painting by adopting a dip-coating wiping mode and carrying out sectional baking; and waxing and drying by adopting hot air. The high-strength painted bundling belt disclosed by the invention has the advantages that since a proper amount of Nb is added, the influence on crystal lattice distortion caused by overlarge volume mismatching of enhanced element atoms and Fe atoms is overcome, namely a value sigma b is increased, the overhigh yielding-to-tensile ratio can be restrained, and a steel belt with high strength, good elasticity, excellent mechanical property is produced; and the energy consumption is low, the process is simple, the painted surface is uniform, the anti-rusting performance is good and the process is simple.
Description
Technical field
The invention belongs to steel belt for packages field, specifically a kind of high-strength japanning tie and manufacture method.
Background technology
Steel belt for packages, also claims tie or steel band, is a kind of narrow strip wrapping material with certain unit elongation compared with high-tensile that have.It is widely used in the packaging bundling of the products such as Iron And Steel Industry, building industry, non-ferrous metal industry, light textile goods, mechanical industry.
Steel belt for packages can be divided into japanning tie, the tie that turns blue, zinc-plated tie by condition of surface classification, and japanning tie is widely used in silicon steel and cold rolled sheet bailing; The tie that turns blue is widely used in the heavy hot-rolled sheet coil of large volume and section bar bailing; Zinc-plated tie is applied to the bailings such as wooden case, colour coated plate, steel plate.Along with market improves constantly the appearance requirement of the packing of product, the improving constantly of domestic silicon steel and cold rolling production technology, progressively substituting import one silicon steel and high-precision cold rolling sheets, the demand of japanning tie constantly increases.
Processing method from Production and Packaging with steel band, the technical process of Production and Packaging steel band is generally: turn blue-curling finished product of hot rolled coil-pickling-cold rolling-itemize-electrically heated.And the technological process of production of producing high-strength steel strip is generally the packing of hot rolled coil-pickling-cold rolling-itemize-thermal treatment-coating-finished product.
At present, produce high-strength steel strip and need to adopt low-alloy, structural alloy steel or carbon constructional quality steel, just can complete by modifier treatment.There is technique more complicated in it, the deficiency that production cost is higher; Adopt induction heating mode to dry to japanning at present, it exists Heating temperature to be difficult to control, and maintenance of the equipment is more loaded down with trivial details, the higher deficiency that waits of production cost.
Through retrieval, China Patent Publication No. is that grant number is the patent documentation of CN101886217A, it discloses intensity package steel strip and production method in one, the composition of its steel band is (weight percent): C:0.05～0.1%, Si0.1～0.15%, Mn:1.0～1.55%, P≤0.05%, S≤0.05%, surplus is Fe, its technique is that cold-rolled steel strip is after itemize, adopt the processing of turning blue of the mode of electromagnetic induction coil heating in medium frequency, 420～440 DEG C of the temperature of turning blue, soaking time 20～30S, steel band come out of the stove after water-cooled, water temperature maintains 30～40 DEG C, adopt induction heating mode to dry coated steel band, 230～260 DEG C of bake out temperatures, can produce tensile strength and be not less than 800Mpa, unit elongation is not less than 6% middle intensity steel band, the deficiency existing is steel band tensile strength, unit elongation is lower, cannot meet all multi-product packing demands, and electromagnetic induction heating in medium frequency working method complexity, maintenance of the equipment is loaded down with trivial details, production cost is higher.
China Patent Publication No. is the patent documentation of CN1189584CA, it discloses a kind of high-strength binding band steel and thermal treatment process, its raw material steel grade adopts following design mix: C:0.22～0.29%, Mn:1.3～1.5%, Si≤0.15%, P≤0.15%, S≤0.01%, Als:0.015, Nb:0.12, surplus is Fe, its production technique is cold-rolled steel strip, after uncoiling sub-cut, enter electrical heater through citation roller, 550～650 DEG C of furnace temperature, steel belt operating speed 2.5～3.5m/min, 450 DEG C～550 DEG C of steel band tapping temperatures, natural air cooled after coming out of the stove, can produce tensile strength by above steel grade and thermal treatment process and be not less than 880Mpa, unit elongation is not less than 8% high-strength binding band, the deficiency of its existence is tensile strength, the mechanical propertys such as unit elongation are lower, discontented foot portions product packing demand, steel belt operating speed is slow, and production efficiency is low, Temperature of Electric Heater is higher, and production cost is higher, and temperature inequality easily causes product performance inequality, and surface is through the processing of only turning blue, and surperficial rustless property is poor, and surperficial salt-fog test < 2h, is unfavorable for long-term storage after wrapped product.
Therefore, from production cost, market, tie performance and outward appearance demand are considered, the production method of high strength japanning tie and lower cost has larger application prospect in reality is managed.
Summary of the invention
The object of the invention is to overcome rustless property and the poor deficiency of visual appearance that prior art exists, provide a kind of and be not less than 950Mpa meeting tensile strength, unit elongation A is not less than 9%, and rustless property and visual appearance are good, lower-cost high-strength japanning tie and preparation method thereof.
Realize the measure of above-mentioned purpose:
A kind of high-strength japanning tie, its chemical composition and weight percent content are: C:0.12～0.20 %; Si:0.2～0.6 %, Mn:1.2～2.0%; P :≤0.025%; S :≤0.02%, Nb:0.01～0.05%, surplus is Fe and inevitable impurity.
Prepare a kind of method of high-strength japanning tie, its step:
1) smelt also and be rolled into volume after strand;
2) hot rolled coil is carried out to pickling, and control pickle solution temperature at 65～95 DEG C, pickling speed is no more than 120 ms/min;
3) carry out cold rolling, control total reduction 65～80%, the steel plate tensile strength after cold rolling end is not less than 980Mpa, unit elongation is not less than 5%;
4) carry out uncoiling, itemize, deburring;
5) in the Pb of atmosphere ratio 60～80% and the plumbous bismuth stove of 20～40%Bi composition, carry out temper, control the interior temperature of plumbous bismuth stove at 400～500 DEG C, steel belt operating speed is at 4～6 ms/min;
6) carry out water-cooled, cooling temperature is no more than 200 DEG C;
7) adopt dip-coating wiping mode to paint, control paint viscosity 18～35S; And adopt resistance-type heating segmentation baking japanning, and control first paragraph heated baking temperature 280～350oC, baking time, at 50～75S, is controlled second segment slow cooling storing temperature at 250-320oC, and baking time is at 50～75S;
8) wax, and adopt hot-air seasoning, drying temperature to be controlled at 150～300 oC, be 60～80 S time of drying.
It is characterized in that: the acid number in pickle solution is controlled at 200-250 grams per liter.
The effect of each element and main technique in the present invention:
C: be the general strengthening element in steel, control the content of C to ensure steel band mechanical property;
Si: also use as a kind of strengthening element in steel, control the content of Si, to ensure the surface property of product;
Mn: suitably increase the content of Mn, to improve intensity and the hardness of raw material, eliminate the harmful effect of S element;
Nb: add micro-Nb element, can play crystal grain thinning, optimize the effect of steel band performance;
Adopt the reason of resistance-type heating segmentation baking japanning: why adopt resistance-type type of heating to dry doped envelope, because it is compared with induction type type of heating, induction type heating installation more complicated, the cost once dropping into is relatively high, inductive means (induction coil) interchangeability and adaptability are poor, equipment maintenance cost is higher, and temperature control more complicated, and resistance-type heater nonrecurring cost less input, easy to maintenance, production cost is lower, temperature control is simple to operation, japanning segmentation baking, can ensure the even oven dry of paint, can ensure again the continuity of high-speed production.
Adopt electric hot-air to dry and control drying temperature at 150～300 oC, can ensure that water-based wax is not perishable, in water-based wax, moisture evaporates rapidly, and wax is evenly attached to steel strip surface, ensures evenly light of steel strip surface, and operating procedure is simple, and energy consumption cost is lower.
The present invention compared with prior art, control Si of the present invention, content strengthening steel band intensity and the hardness of Mn, eliminate to greatest extent the harmful effect of S, the content of controlling Si ensures the surface property of tie product, control the content of P and S to improve the purity of steel, add in right amount Nb content, overcome the excessive crystal lattice distortion effects causing of strengthening element atom and Fe atomic volume mismatch, can improving σ b value, to suppress yield tensile ratio again too high, can obtain intensity higher, elasticity is better, the steel band that mechanical property each side is more excellent; And energy consumption is lower, technique is simple, and painted surface is even, good antirust property, and technique is simple.
Embodiment
Embodiment 1
A kind of high-strength japanning tie, its chemical composition and weight percent content are: C:0.14%; Si:0.46 %, Mn:1.3%; P:0.023 %; S:0.02 %, Nb:0.019%, surplus is Fe and inevitable impurity.
Prepare measured step rapid:
1) smelt also and be rolled into volume after strand;
2) hot rolled coil is carried out to pickling, pickle solution temperature is at 65～68 DEG C, and the acid number in pickle solution is 210 grams per liters, and pickling speed is 115 ms/min;
3) carry out cold rollingly, total reduction is at 70 %, and the steel plate tensile strength after cold rolling end is at 985Mpa, and unit elongation is 5.5%;
4) carry out uncoiling, itemize, deburring;
5) in atmosphere is the plumbous bismuth stove of 65%Pb+35%Bi composition, carry out temper, in plumbous bismuth stove, temperature is at 450～455 DEG C, and steel belt operating speed is at 5.0m/min;
6) carry out water-cooled, cooling temperature is no more than 195 DEG C;
7) adopt japanning to adopt dip-coating wiping mode, control paint viscosity 23S; And adopt resistance-type heating segmentation baking japanning, and first paragraph storing temperature is at 310 oC, and baking time is at 75 S, and second segment storing temperature is at 265oC, and baking time is at 56 S;
8) wax, and adopt hot-air seasoning, drying temperature to be controlled at 245～255 oC, be 60S time of drying.
After testing, the tensile strength of japanning tie is 965Mpa, and unit elongation A is 9%, and alternating bending frequency 10 times (R=5mm) is without brittle failure layering, and finish coatings is light evenly; Do butanone wiping experiment 41 times through painted surface, the antirust experiment of salt fog 8 hours, finds no corrosion phenomena, reaches the requirement of industrial high-intensity packing steel belt.
Embodiment 2
A kind of high-strength japanning tie, its chemical composition and weight percent content are: C:0.16 %; Si:0.29 %, Mn:1.42%; P:0.012 %; S:0.014 %, Nb:0.021%, surplus is Fe and inevitable impurity.
Prepare measured step rapid:
1) smelt also and be rolled into volume after strand;
2) hot rolled coil is carried out to pickling, pickle solution temperature is at 70～73 DEG C, and the acid number in pickle solution is 235 grams per liters, and pickling speed is 110 ms/min;
3) carry out cold rollingly, total reduction is 68%, and the steel plate tensile strength after cold rolling end is at 998Mpa, and unit elongation is 6.0%;
4) carry out uncoiling, itemize, deburring;
5) in the plumbous bismuth stove that is 70%Pb+30%Bi in atmosphere, carry out temper, in plumbous bismuth stove, temperature is at 482～485 DEG C, and steel belt operating speed is at 5.5m/min;
6) carry out water-cooled, cooling temperature is no more than 198 DEG C;
7) adopt japanning to adopt dip-coating wiping mode, control paint viscosity 30S; And adopt resistance-type heating segmentation baking japanning, and first paragraph storing temperature is at 330 oC, and baking time is at 70 S, and second segment storing temperature is at 280 oC, and baking time is at 56 S;
8) wax, and adopt hot-air seasoning, drying temperature to be controlled at 155～160 oC, be 80S time of drying.
After testing, the tensile strength of japanning tie is 950Mpa, and unit elongation A is 9.5%, and alternating bending frequency 12 times (R=5mm) is without brittle failure layering, and finish coatings is light evenly; Do butanone wiping experiment 37 times through painted surface, the antirust experiment of salt fog 5 hours, finds no corrosion phenomena, reaches the requirement of industrial high-intensity packing steel belt.
Embodiment 3
A kind of high-strength japanning tie, its chemical composition and weight percent content are: C:0.18 %; Si:0.37 %, Mn:1.58%; P:0.018 %; S:0.019 %, Nb:0.014%, surplus is Fe and inevitable impurity.
Prepare measured step rapid:
1) smelt also and be rolled into volume after strand;
2) hot rolled coil is carried out to pickling, pickle solution temperature is at 76～79 DEG C, and the acid number in pickle solution is 250 grams per liters, and pickling speed is 113 ms/min;
3) carry out cold rollingly, total reduction is 73%, and the steel plate tensile strength after cold rolling end is at 1008Mpa, and unit elongation is 6.0%;
4) carry out uncoiling, itemize, deburring;
5) in the plumbous bismuth stove that is 80%Pb+20%Bi in atmosphere, carry out temper, in plumbous bismuth stove, temperature is at 490～500 DEG C, and steel belt operating speed is at 6.0m/min;
6) carry out water-cooled, cooling temperature is no more than 198 DEG C;
7) adopt japanning to adopt dip-coating wiping mode, control paint viscosity 25S; And adopt resistance-type heating segmentation baking japanning, and first paragraph storing temperature is at 349 oC, and baking time is at 68S, and second segment storing temperature is at 305 oC, and baking time is at 65 S;
8) wax, and adopt hot-air seasoning, drying temperature to be controlled at 285～298 oC, be 65S time of drying.
After testing, the tensile strength of japanning tie is 980Mpa, and unit elongation A is 10.0%, and alternating bending frequency 13 times (R=5mm) is without brittle failure layering, and finish coatings is light evenly; Do butanone wiping experiment 35 times through painted surface, the antirust experiment of salt fog 9 hours, finds no corrosion phenomena, reaches the requirement of industrial high-intensity packing steel belt.
Embodiment 4
A kind of high-strength japanning tie, its chemical composition and weight percent content are: C:0.2 %; Si:0.42 %, Mn:1.65%; P:0.019 %; S:0.017%, Nb:0.027%, surplus is Fe and inevitable impurity.
Prepare measured step rapid:
1) smelt also and be rolled into volume after strand;
2) hot rolled coil is carried out to pickling, pickle solution temperature is at 89～94 DEG C, and the acid number in pickle solution is 242 grams per liters, and pickling speed is 117 ms/min;
3) carry out cold rollingly, total reduction is 65%, and the steel plate tensile strength after cold rolling end is at 1150Mpa, and unit elongation is 5.5%;
4) carry out uncoiling, itemize, deburring;
5) in the plumbous bismuth stove that is 80%Pb+20%Bi in atmosphere, carry out temper, in plumbous bismuth stove, temperature is at 460～470 DEG C, and steel belt operating speed is at 4.8m/min;
6) carry out water-cooled, cooling temperature is no more than 190 DEG C;
7) adopt japanning to adopt dip-coating wiping mode, control paint viscosity 20S; And adopt resistance-type heating segmentation baking japanning, and first paragraph storing temperature is at 325 oC, and baking time is at 70S, and second segment storing temperature is at 285 oC, and baking time is at 60 S;
8) wax, and adopt hot-air seasoning, drying temperature to be controlled at 195～205 oC, be 70S time of drying.
After testing, the tensile strength of japanning tie is 996Mpa, and unit elongation A is 9.5%, and alternating bending frequency 11 times (R=5mm) is without brittle failure layering, and finish coatings is light evenly; Do butanone wiping experiment 38 times through painted surface, the antirust experiment of salt fog 10 hours, finds no corrosion phenomena, reaches the requirement of industrial high-intensity packing steel belt.
Embodiment 5
A kind of high-strength japanning tie, its chemical composition and weight percent content are: C:0.11 %; Si:0.53 %, Mn:1.70%; P:0.017 %; S:0.0195%, Nb:0.033%, surplus is Fe and inevitable impurity.
Prepare measured step rapid:
1) smelt also and be rolled into volume after strand;
2) hot rolled coil is carried out to pickling, pickle solution temperature is at 70～80 DEG C, and the acid number in pickle solution is 232 grams per liters, and pickling speed is 110 ms/min;
3) carry out cold rollingly, total reduction is 80%, and the steel plate tensile strength after cold rolling end is at 1100Mpa, and unit elongation is 5.0%;
4) carry out uncoiling, itemize, deburring;
5) in the plumbous bismuth stove that is 80%Pb+20%Bi in atmosphere, carry out temper, in plumbous bismuth stove, temperature is at 470～480 DEG C, and steel belt operating speed is at 4.5m/min;
6) carry out water-cooled, cooling temperature is no more than 190 DEG C;
7) adopt japanning to adopt dip-coating wiping mode, control paint viscosity 27S; And adopt resistance-type heating segmentation baking japanning, and first paragraph storing temperature is at 300 oC, and baking time is at 75S, and second segment storing temperature is at 260 oC, and baking time is at 63 S;
8) wax, and adopt hot-air seasoning, drying temperature is controlled at 220～230oC, and be 75S time of drying.
After testing, the tensile strength of japanning tie is 1000Mpa, and unit elongation A is 9.0%, and alternating bending frequency 11 times (R=5mm) is without brittle failure layering, and finish coatings is light evenly; Do butanone wiping experiment 49 times through painted surface, the antirust experiment of salt fog 10 hours, finds no corrosion phenomena, reaches the requirement of industrial high-intensity packing steel belt.
Above-described embodiment only exemplifies for the best, and is not the restriction to embodiments of the present invention.
Claims (1)
1. the method for a kind of high-strength japanning tie of preparation, its step:
1) smelt also and be rolled into volume after strand; The chemical composition of its coil of strip and weight percent content are: C:0.12～0.20 %; Si:0.42～0.6 %, Mn:1.2～1.7%; P :≤0.025%; S :≤0.02%, Nb:0.019～0.05%, surplus is Fe and inevitable impurity;
2) hot rolled coil is carried out to pickling, and control pickle solution temperature at 65～95 DEG C, pickling speed is no more than 120 ms/min;
3) carry out cold rolling, control total reduction 65～68% or 73～80%, the steel plate tensile strength after cold rolling end is not less than 980Mpa, unit elongation is not less than 5%;
4) carry out uncoiling, itemize, deburring;
5) in the Pb of atmosphere ratio 60～80% and the plumbous bismuth stove of 20～40%Bi composition, carry out temper, control the interior temperature of plumbous bismuth stove at 400～500 DEG C, steel belt operating speed is at 4～6 ms/min;
6) carry out water-cooled, cooling temperature is no more than 200 DEG C;
7) adopt dip-coating wiping mode to paint, control paint viscosity 18～35S; And adopt resistance-type heating segmentation baking japanning, and control first paragraph heated baking temperature 280～350oC, baking time, at 50～75S, is controlled second segment slow cooling storing temperature at 250-320oC, and baking time is at 50～75S;
8) wax, and adopt hot-air seasoning, drying temperature to be controlled at 150～300 oC, be 60～80S time of drying.
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| CN201210559019.0A CN102978512B (en) | 2012-12-21 | 2012-12-21 | High-strength painted bundling belt and manufacturing method thereof |
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| CN201210559019.0A CN102978512B (en) | 2012-12-21 | 2012-12-21 | High-strength painted bundling belt and manufacturing method thereof |
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| CN103451524B (en) * | 2013-09-09 | 2015-07-29 | 武汉钢铁(集团)公司 | Thickness is tensile strength >=1000MPa japanning tie steel and the production method of 0.5mm |
| CN103805853B (en) * | 2014-03-05 | 2016-03-16 | 武汉钢铁(集团)公司 | A kind of high-strength hot-dip zinc-coated tie and production method thereof |
| CN103805845B (en) * | 2014-03-05 | 2016-03-30 | 武汉钢铁(集团)公司 | A kind of thickness is the production method of the very thin japanning tie of high strength of 0.40mm |
| CN111621707B (en) * | 2020-06-28 | 2022-02-08 | 马鞍山钢铁股份有限公司 | Steel for high-ductility cold-rolled steel bar CRB680H and production process thereof |
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| JP2671726B2 (en) * | 1992-09-30 | 1997-10-29 | 日本鋼管株式会社 | Manufacturing method of cold rolled steel sheet for ultra deep drawing |
| US20030034100A1 (en) * | 2001-08-02 | 2003-02-20 | Doonan Jeffery W. | Steel strapping |
| CN102719730A (en) * | 2012-07-06 | 2012-10-10 | 武汉钢铁(集团)公司 | Manufacturing method of high strength bluing strapping steel |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP3332060B2 (en) * | 1995-01-06 | 2002-10-07 | 新日本製鐵株式会社 | Manufacturing method of cold rolled steel sheet with good surface properties |
| MY157870A (en) * | 2007-05-06 | 2016-07-29 | Bluescope Steel Ltd | A thin cast strip product with microalloy additions, and method for making the same |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2671726B2 (en) * | 1992-09-30 | 1997-10-29 | 日本鋼管株式会社 | Manufacturing method of cold rolled steel sheet for ultra deep drawing |
| US20030034100A1 (en) * | 2001-08-02 | 2003-02-20 | Doonan Jeffery W. | Steel strapping |
| CN102719730A (en) * | 2012-07-06 | 2012-10-10 | 武汉钢铁(集团)公司 | Manufacturing method of high strength bluing strapping steel |
Non-Patent Citations (1)
| Title |
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| 影响涂漆捆带耐蚀性的因素分析;吴远东等;《辽宁科技学院学报》;20111215;第13卷(第4期);4-8 * |
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